Method for focusing appliances on distant objects.



F. DELLA TORRE. MEIHQD (if FQGUSING APPLlANCES, 0N msnmn- OBJECT-S.

APPLICATIQN FILED OCT. 21. ms.

Patenm Dec. 30, 19H);

2 SHEETS-SHEET l- ATTOR NEY METHQD FOR Application filed ficwber Baltimore city, t 69 5 hwe iyvente f .Method for FUUHb-fifi; taut Objects, of vnith specification. 6. My invenflion relates; in an imp-"w w g 20 ed. for locatin k bumt abjec' 7f im the apps 5 :az'nnuL \g: steppi Yiuw LT: object acoustical $11 53 thermvii-h, ca pelmf 7C 15 plizmce for actin particular lei-e1 beam of Eight 01' said object.

IL further 0 1;- cct of 1 75 20 for ts-zusmg app an unproven me x F. 1 Y mercnwn,

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foot treadle fulcrumed at 27 and to which cord 28 is attached. Cord 28 operates over pulley 29, and operates blanking device or valve 15 in such a manner that one operator, such as operator A, by means of his foot treadle 26, can shift from observing vibrator 2 in observing vibrator 3.

30 and 31 are shafts secured to trunnion supports 32 and 33 respectively and between which operator A places himself, so that he may move. the appliance (by means of his body) in azimuth; trunnion supports 32 and 33 being mounted on trunnion base 3i, which trunnion base 34: is pivotally mounted on level base 35. Appliance 1 is mounted by means of trunnions 36 and 37 in trunnion supports 32 and On trunnion. 37 is secured hand Wheel 38 for rotating'appliance 1 vertically. 1'

Vibrator 21is limited in its movements by stops 39 and vibrator 3 is limited in its movements by stops 40; the range of vibrators in practice is any convenient are, such as twenty degrees from the axes of appliance. 41 is a hand wheel attached to vibrator 2 and operates the same; i2 is a hand wheelattached to vibrator 3 and operates the same. 43 is a switch in the appliance shown for operating the light by throwing the current on and off.

The practice of my method is as follows:

.Wishing to get the bearing of a distant acoustic disturbance such as might be ob served from soaring aircraft, preferably two operators are employed; one n'iaking the vertical or transit observations, and the other the horizontal 0'1 azimuth observsv tions; this may be accomplished by both observing operators controlling asingleappliance or one vibratorin azimuth with one operator may be used with one appliance and another operator in observing in transit may be used with another appliance; two applis anccs being used such as is now common in sea rchlight observations working in corn jum tion, and in this connection I wish it understood that l do not wish to limit my: self in the practice of my method to the instrument shown in the drawings as my azinmth and transit vibrators maybe at a distance from lhe cooperatively controlled appliance and from each other and the said appliance controlled by well known synchronizing api'iaratus.

The operators having taken their respective positions, vibrato their vibrators in limited arcs, causing the planes of the vibrators to approach a normal position to the sound wave, by observing the intensity of the same on the sides of the vibrators and directing the planes thereof toward the greatest intensity, until such a point is reached that the wave is split, and equal intensity of wave is observed on either side of the vibrators, at which point the distant I claim and desire, to

acoustic disturbance is in the planes of the vibrators. The two vibrators having their planes at an angle with reference to each other, the common intersect-ion of the planes of the'vibrators when the intensity of the received wave is equal on all faces is the normal line of transmission of acoustic disturbance desired.

Having thus described my invention, what secure by Letters Patent is:

1. Method of focusing anappliance consisting of, receiving vibrations upon the 0pposite faces of planes vibrating on a plurality of axes changed to receive similar vibrations from said planes and then focusing the axis of said appliance normal to the said vibrations.

2. Method of locating an object consisting of, receiving vibrations emanating from an object to be located along the intersection of a plurality of intersecting planes placed in the line of transmission normal to said vibrations. 4

3. Method of locating an object consisting of, receiving vibrations emanating from an ob ect to be located along the intersection of a plurality of intersecting planes placed in the line of transmission normal to said vibrations and then focusing the axis of said appliance in said line.

4. Method of locating an object consisting of, initially receiving vibrations therefrom in one of the quadrants of normally bisecting planes, then vibrating said two planes to a point of rest parallel to the line oftransmission of said vibrations.

5. Method of locating an object consist- 'ing of, sinmltaneously receiving vibrations therefrom on two angularly disposed planes provided with receiving instruments on each side of said two planes for independently determining the relative intensity of the received vibrations on the respective sides of said two planes, and then vibrating said planes until the relative intensity of vibrations receivedon the various sides of the said two planes are equal.

' 6. Method of locating an object consist ing of, initially receiving vibrations therefrom in one of the quadrants of normally b'isccting planes, then vibrating said two planes to a point of rest parallel to the line of transmission of said vibrations, said planes being provides with means of determining the relative intensity of vibrations on thercspcctive faces thereof; v

7. Method of locating an object consisting of, initially receiving vibrations therefrom in one of the quadrants of normally bisecting planes, then vibrating and rotating said two planes to a point of rest arallel to the line of transmission of sai vihrations.

talking said pmnesuntil the relative intensifisy l of vibratjons received on the various sides '10 of the szud two planes are'equaL FRANK DELLA TORRE.

Wifinesses':

EDWARD P. REYNOLDS,

R. E. KANODE. v 

